Mediterranean was not the largest empire in total territory in world history until 27 BC the Roman Empire was a Republic Julius Caesar declared war on the Roman Senate itself became sole ruler Brutus, Cassius and others assasinated Julius Caesar Octavius declared himself "Caesar Augustus" and first Emperor of Rome 200 years of peace followed by 100 years of warfare in 284 AD Diocletian divided the Roman empire into two halves: East and West in 306 Constantine I declared Christianity in 401 the Visigoths invaded Italy the last emperor in Rome was deposed in 476 Ancient Egypt one of the oldest in the world and began more than 5000 years ago lasted for over 3000 years was divided into two kingdoms - Upper and Lower Egypt King Menes had conquered Lower Egypt - 'King of Upper and Lower Egypt` the age of the 1st Dynasty had begun new capital city at Memphis the 3rd Dynasty the Old Kingdom was a time of prosperity and peace by the 6th Dynasty the pharaohs had lost their influence
Gallaeci, Lusitanians, Celtici and Cynetes, visited by Phoenicians and Carthaginians, incorporated in the Roman Republic dominions as Lusitania and part of Gallaecia (both part of Hispania), after 45 BC until 298 AD, settled again by Suebi, Buri, and Visigoths, and conquered by Moors. Other minor influences include some 5th century vestiges of Alan settlement, which were found in Alenquer, Coimbra and even Lisbon. THE PRE-ROMAN TRIBES OF ANCIENT PORTUGAL AND THEIR EXPANSION PATTERNS.
32 Rahvastik Alates 2007 aastast oli Portugalis 10 617 575 inimest, kellest umbes 332 137 olid seaduslikud sisserändajad (51,7% naised, 48,3% mehed). Portugal on suhteliselt homogeenne riik keeleliselt ja usuliselt. Portugali rahvas on peamiselt koos elavad eel-rooma Ibeeria keldi hõimud, Lusitaanialased ja teised, kellel on osa rooma, germaani (Visigoths ja Suevi) ja mõned väiksemad elemendid, peamiselt Araabia-berberien ja juudid. Lisaks demograafilisele arengule on iseloomulik kolm suundumust: eluea pikenemine, vähenenud sündivuse ja kasvava elanikkonna osa välisriikides. Tänapäeval on paljud ida-eurooplased (eelkõige Ukraina, Moldova, Rumeenia ja Venemaa), samuti brasiillased,loonud Portugali oma kodusid.Portugali keelt räägitakse kogu riigis,